by Whitecrab » Sat 11 Dec 2004, 01:21:58
$this->bbcode_second_pass_quote('Anonymous', 'E')conomics talked about several market types, such as perfect competition, monopolistic competition, oligopoly, monopoly. Perfect competition is seen as the most ideal and efficient market form, especially for consumers. But the idea of "competition" is about someone winning, as well as elimination of competitors one by one as time goes by.
My query is, in the long term, won't perfectly competitive markets (or nearly perfectly competitive markets) tend towards oligopolies and even monopolies? Two real life examples: Decades ago there were 108 US automobile companies. Then there were 44, then 8, and now only 2. Also the media in the US-it was once much more competitive but now 6 companies control 90% of US media. It seems competitive markets have a tendency to become less competitive in the long term due to political lobbying of some competitors, short term advantages to certain firms arising especially due to technological innovation, and greater economies of scale when firm merge and become larger.
Is this proposition valid?
*Looks up from his economics notes*
So everyone's clear, all markets (except a monopoly) have competition. That's not what a "perfectly competitive market" means. As a more formal defintion, a market is perfectly competitive if:
-There are many buyers and sellers
-All sellers are selling essentially the same product
-All buyers and sellers are so small, they act as price takers (i.e. no firm or consumer is so important their decisions can change the "going market rate")
-There is equal oppurtunity to entry/exit from the market (so you won't have to set up your own competing sewer or phone line system, for example)
A good example might be the market for...oh I dunno...wheat. I assume there are many, many people selling and buying wheat all over the world, and probably little in the way of brand loyalty. If one guy charged more for wheat, people would just buy from someone else. So everyone uses a similar market rate.
If all the firms did start merging and coming together, then you wouldn't call it a perfectly competitive market. You'd start calling it an oligopoly or something. But this isn't something that naturally
has to happen to a perf. comp. market. Sometimes monopolies and oligopolies have disentegrated, too. I sure have a
lot more options for phone and internet service now then I did as a child.
I agree with you that over-consolidation is a problem, these days. Particularily in the media. Peak oil will probably in the long term mean the death of large overhead corporations as things become more localized and small-scale. But in the short term...part of what's kept market consolidation in check is actually globalization - if America has 3 big car makers, but suddenly there's a world car market, things are a lot more free-markety. Will we ever be in a temporary situation where things are continental or regional, and we really get abused?